/*
** $Id: ltm.h,v 2.22.1.1 2017/04/19 17:20:42 roberto Exp $
** Tag methods
** See Copyright Notice in lua.h
*/

#ifndef ltm_h
#define ltm_h


#include "lobject.h"


/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER TM" and "ORDER OP"
*/
typedef enum {
    TM_INDEX,
    TM_NEWINDEX,
    TM_GC,
    TM_MODE,
    TM_LEN,
    TM_EQ,  /* last tag method with fast access */
    TM_ADD,
    TM_SUB,
    TM_MUL,
    TM_MOD,
    TM_POW,
    TM_DIV,
    TM_IDIV,
    TM_BAND,
    TM_BOR,
    TM_BXOR,
    TM_SHL,
    TM_SHR,
    TM_UNM,
    TM_BNOT,
    TM_LT,
    TM_LE,
    TM_CONCAT,
    TM_CALL,
    TM_N    /* number of elements in the enum */
} TMS;


#define gfasttm(g, et, e) ((et) == NULL ? NULL : \
  ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))

#define fasttm(l, et, e)  gfasttm(G(l), et, e)

#define ttypename(x)  luaT_typenames_[(x) + 1]

LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS];


LUAI_FUNC const char *luaT_objtypename(lua_State *L, const TValue *o);

LUAI_FUNC const TValue *luaT_gettm(Table *events, TMS event, TString *ename);

LUAI_FUNC const TValue *luaT_gettmbyobj(lua_State *L, const TValue *o,
                                        TMS event);

LUAI_FUNC void luaT_init(lua_State *L);

LUAI_FUNC void luaT_callTM(lua_State *L, const TValue *f, const TValue *p1,
                           const TValue *p2, TValue *p3, int hasres);

LUAI_FUNC int luaT_callbinTM(lua_State *L, const TValue *p1, const TValue *p2,
                             StkId res, TMS event);

LUAI_FUNC void luaT_trybinTM(lua_State *L, const TValue *p1, const TValue *p2,
                             StkId res, TMS event);

LUAI_FUNC int luaT_callorderTM(lua_State *L, const TValue *p1,
                               const TValue *p2, TMS event);


#endif
